/* หน้าแรกสำหรับผู้ที่ยังไม่ได้ล็อกอิน — หน้า standalone ไม่ใช้ sidebar/shell ของแดชบอร์ด
   แนวทาง: landing page สถาบันแบบมาตรฐาน (อ้างอิงโครงจาก dev.rru.ac.th/sdgs) — navbar จริงมีลิงก์เมนู,
   hero การ์ดทับพื้นหลังไล่สี, แถบสถิติเข้มสลับกับเนื้อหาสว่าง, footer หลายคอลัมน์
   สีคงเดิม: --primary/--accent-gold ของ ITDL + สีประจำคณะ ($faculty_color_map) */

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body.landing-page {
  margin: 0;
  overflow-x: clip;
  color: var(--text);
  background: var(--canvas);
  font-family: var(--font-sans);
}

.landing-page a { text-decoration: none; }

/* ===== Navbar ===== */

.landing-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: .85rem 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
}

@media (min-width: 768px) {
  .landing-navbar { padding: .9rem 2.5rem; }
}

.landing-navbar-brand {
  display: flex;
  align-items: center;
  gap: .65rem;
  min-width: 0;
}

.landing-navbar-brand img { width: 44px; height: 44px; flex-shrink: 0; object-fit: contain; }

@media (min-width: 768px) {
  .landing-navbar-brand img { width: 50px; height: 50px; }
}

.landing-navbar-brand-text { min-width: 0; overflow: hidden; }

.landing-navbar-brand-text strong {
  display: block;
  overflow: hidden;
  color: var(--text);
  font-size: 1rem;
  font-weight: 800;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.landing-navbar-brand-text span {
  display: block;
  color: var(--muted);
  font-size: .8125rem;
  font-weight: 500;
}

.landing-navbar-links {
  display: none;
  align-items: center;
  gap: 1.75rem;
  margin: 0 0 0 auto;
  padding: 0;
  list-style: none;
}

@media (min-width: 900px) {
  .landing-navbar-links { display: flex; }
}

.landing-navbar-links a {
  color: var(--text-soft);
  font-size: .9375rem;
  font-weight: 700;
  white-space: nowrap;
  transition: color .14s ease;
}

.landing-navbar-links a:hover { color: var(--primary); }

.landing-navbar-cta {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: .5rem;
  min-height: 42px;
  padding: 0 1.2rem;
  color: #fff;
  background: var(--primary);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 700;
  transition: background-color .16s ease;
}

.landing-navbar-cta:hover { background: var(--primary-hover); }
.landing-navbar-cta:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* ===== Hero: การ์ดข้อความทับพื้นไล่สี + แผงเกจตกแต่ง ===== */

.landing-hero-outer {
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 6vw, 4.5rem) 1.25rem;
  background: linear-gradient(150deg, var(--brand-950) 0%, var(--brand-900) 45%, var(--brand-800) 78%, color-mix(in srgb, var(--primary) 55%, var(--brand-800)) 100%);
}

@media (min-width: 768px) {
  .landing-hero-outer { padding-left: 2.5rem; padding-right: 2.5rem; }
}

.landing-hero-outer::before {
  content: "";
  position: absolute;
  top: -12rem;
  right: -8rem;
  width: 28rem;
  height: 28rem;
  border: 1px solid color-mix(in srgb, var(--accent-gold) 26%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 2.75rem color-mix(in srgb, var(--accent-gold) 5%, transparent), 0 0 0 5.5rem color-mix(in srgb, var(--accent-gold) 3%, transparent);
  pointer-events: none;
}

.landing-hero-outer::after {
  content: "";
  position: absolute;
  bottom: -10rem;
  left: -8rem;
  width: 22rem;
  height: 22rem;
  border: 1px solid color-mix(in srgb, #fff 14%, transparent);
  border-radius: 50%;
  pointer-events: none;
}

.landing-hero {
  position: relative;
  z-index: 1;
  max-width: 78rem;
  margin: 0 auto;
}

.landing-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .landing-hero-grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 3rem; }
}

.landing-hero-card {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.landing-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  width: fit-content;
  padding: .4rem .8rem;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 9999px;
  font-size: .75rem;
  font-weight: 700;
}

.landing-title {
  margin: 1rem 0 0;
  color: var(--text);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.2;
}

.landing-title-nowrap {
  white-space: nowrap;
}

.landing-lede {
  max-width: 48ch;
  margin: .9rem 0 0;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.75;
}

.landing-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.5rem;
}

.landing-cta-primary,
.landing-cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  min-height: 46px;
  padding: 0 1.4rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 700;
  transition: transform .16s ease, box-shadow .16s ease, background-color .16s ease;
}

.landing-cta-primary {
  color: #fff;
  background: var(--primary);
  box-shadow: var(--shadow-sm);
}

.landing-cta-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }
.landing-cta-primary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.landing-cta-secondary {
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--border-strong);
}

.landing-cta-secondary:hover { background: var(--surface-muted); }
.landing-cta-secondary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.landing-hero-mini-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1.75rem;
  overflow: hidden;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.landing-hero-mini-stat {
  padding: .8rem .6rem;
  background: var(--surface-subtle);
  text-align: center;
}

.landing-hero-mini-stat strong {
  display: block;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -.01em;
}

.landing-hero-mini-stat span {
  display: block;
  color: var(--muted);
  font-size: .6875rem;
  font-weight: 600;
}

/* แผงตกแต่งขวา: เกจอัตราผ่าน + ป้ายลอย */
.landing-hero-visual { position: relative; padding-top: 1rem; }

.landing-hero-gauge-card {
  padding: 1.75rem;
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.landing-gauge-wrap { display: flex; flex-direction: column; align-items: center; text-align: center; }

.landing-gauge {
  --gauge-size: clamp(160px, 18vw, 208px);
  position: relative;
  width: var(--gauge-size);
  height: var(--gauge-size);
  border-radius: 50%;
  background: conic-gradient(var(--primary) calc(var(--gauge-rate) * 1%), var(--surface-muted) 0);
}

.landing-gauge::before {
  content: "";
  position: absolute;
  inset: 14px;
  background: var(--surface);
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px var(--border);
}

.landing-gauge-value {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text);
}

.landing-gauge-value strong {
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1;
}

.landing-gauge-value small {
  margin-top: .3rem;
  color: var(--muted);
  font-size: .6875rem;
  font-weight: 700;
}

.landing-gauge-caption {
  max-width: 26ch;
  margin: 1rem 0 0;
  color: var(--text-soft);
  font-size: .8125rem;
  font-weight: 600;
}

.landing-hero-float-badge {
  position: absolute;
  left: -1rem;
  bottom: -1rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  max-width: 15rem;
  padding: .75rem .9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

@media (max-width: 1023px) {
  .landing-hero-float-badge { position: static; margin-top: -1rem; max-width: none; }
}

.landing-hero-float-badge i {
  flex-shrink: 0;
  color: var(--success);
  font-size: 1.1rem;
}

.landing-hero-float-badge strong {
  display: block;
  color: var(--text);
  font-size: .75rem;
  font-weight: 800;
}

.landing-hero-float-badge span {
  display: block;
  color: var(--muted);
  font-size: .6875rem;
}

/* ===== ส่วนเนื้อหาทั่วไป ===== */

.landing-section { padding: clamp(2.5rem, 5vw, 4rem) 0; }

/* กันไม่ให้ anchor jump จาก navbar พาไปชิดขอบบนจนเกินไป — เผื่อระยะหายใจไว้เหนือหัวข้อ section เสมอ
   เดิมตั้งไว้ 1.25rem (20px) เผื่อไว้ก่อนที่ navbar จะเป็น sticky แต่ตอนนี้ navbar ตรึงจริง
   แล้ว (position: sticky) สูง ~71px (มือถือ) / ~80px (>=768px) ค่าเดิมเลยไม่พอ ต้องบวกความสูง
   navbar จริงเข้าไปด้วย ไม่ใช่แค่ระยะหายใจเฉย ๆ */
#landing-hero-title,
#landing-steps,
#landing-ranking,
#landing-heatmap,
#landing-guide {
  scroll-margin-top: 88px;
}

@media (min-width: 768px) {
  #landing-hero-title,
  #landing-steps,
  #landing-ranking,
  #landing-heatmap,
  #landing-guide {
    scroll-margin-top: 104px;
  }
}

.landing-band {
  max-width: 78rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

@media (min-width: 768px) {
  .landing-band { padding-left: 2.5rem; padding-right: 2.5rem; }
}

.landing-section-kicker {
  display: block;
  margin-bottom: .5rem;
  color: var(--primary);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.landing-section-head { max-width: 46rem; }
.landing-section-head--center { max-width: 40rem; margin: 0 auto; text-align: center; }

.landing-band-title {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.35rem, 2.2vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -.015em;
}

.landing-band-lede {
  max-width: 60ch;
  margin: .5rem 0 0;
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.7;
}

.landing-section-head--center .landing-band-lede { margin-left: auto; margin-right: auto; }

/* ===== ระบบทำงานอย่างไร: แถวขั้นตอนพร้อมเลข ===== */

.landing-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

@media (min-width: 768px) {
  .landing-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; }
}

.landing-step {
  padding: 1.5rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}

.landing-step-icon {
  display: inline-flex;
  width: 2.5rem;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: linear-gradient(155deg, var(--primary-soft), color-mix(in srgb, var(--primary) 14%, var(--primary-soft)));
  border: 1px solid color-mix(in srgb, var(--primary) 20%, transparent);
  border-radius: var(--radius-md);
  font-size: 1rem;
}

.landing-step-icon.is-staff {
  color: var(--info);
  background: linear-gradient(155deg, var(--info-soft), color-mix(in srgb, var(--info) 14%, var(--info-soft)));
  border-color: color-mix(in srgb, var(--info) 20%, transparent);
}

.landing-step-tag {
  display: inline-flex;
  width: fit-content;
  margin-top: .85rem;
  padding: .25rem .6rem;
  border-radius: 9999px;
  font-size: .65rem;
  font-weight: 700;
}

.landing-step-tag.is-public { color: var(--success); background: var(--success-soft); }
.landing-step-tag.is-staff { color: var(--info); background: var(--info-soft); }

.landing-step h3 {
  margin: .6rem 0 0;
  color: var(--text);
  font-size: .9rem;
  font-weight: 700;
}

.landing-step p {
  margin: .4rem 0 0;
  color: var(--muted);
  font-size: .8125rem;
  line-height: 1.65;
}

/* ===== แถบสถิติเข้ม + การ์ดอันดับลอย ===== */

.landing-stats-band {
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: linear-gradient(135deg, var(--brand-950), var(--brand-800) 65%, color-mix(in srgb, var(--primary) 45%, var(--brand-800)));
}

.landing-stats-band::before {
  content: "";
  position: absolute;
  top: -10rem;
  left: 45%;
  width: 30rem;
  height: 30rem;
  border: 1px solid color-mix(in srgb, #fff 10%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 2.5rem color-mix(in srgb, #fff 4%, transparent);
  pointer-events: none;
}

.landing-stats-band .landing-section-kicker { color: var(--accent-gold); }
.landing-stats-band .landing-band-title { color: #fff; }
.landing-stats-band .landing-band-lede { color: color-mix(in srgb, #fff 78%, transparent); }

.landing-stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
  align-items: start;
}

@media (min-width: 1024px) {
  .landing-stats-grid { grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 2.5rem; }
}

.landing-dark-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: color-mix(in srgb, #fff 14%, transparent);
  border: 1px solid color-mix(in srgb, #fff 14%, transparent);
  border-radius: var(--radius-lg);
}

@media (max-width: 640px) {
  .landing-dark-stats { grid-template-columns: 1fr; }
}

.landing-dark-stat {
  padding: 1.25rem 1rem;
  background: color-mix(in srgb, var(--brand-950) 45%, transparent);
}

.landing-dark-stat strong {
  display: block;
  color: #f0fdf4;
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 2.6vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -.02em;
}

.landing-dark-stat span {
  display: block;
  margin-top: .3rem;
  color: color-mix(in srgb, #fff 80%, transparent);
  font-size: .75rem;
  font-weight: 600;
}

.landing-dark-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.landing-dark-highlights {
  display: grid;
  gap: 1px;
  overflow: hidden;
  background: color-mix(in srgb, #fff 14%, transparent);
  border: 1px solid color-mix(in srgb, #fff 14%, transparent);
  border-radius: var(--radius-lg);
}

.landing-dark-highlight {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding: 1rem 1.1rem;
  background: color-mix(in srgb, var(--brand-950) 45%, transparent);
}

.landing-dark-highlight i {
  display: inline-flex;
  width: 2.1rem;
  height: 2.1rem;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  background: color-mix(in srgb, var(--accent-gold) 16%, transparent);
  border-radius: var(--radius-sm);
  font-size: .8125rem;
}

.landing-dark-highlight div { min-width: 0; }

.landing-dark-highlight span {
  display: block;
  color: color-mix(in srgb, #fff 78%, transparent);
  font-size: .7rem;
  font-weight: 600;
}

.landing-dark-highlight strong {
  display: block;
  margin-top: .15rem;
  overflow: hidden;
  color: #f0fdf4;
  font-size: .8125rem;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* การ์ดอันดับคณะ ลอยเป็น panel ขาวฝั่งขวาของแถบเข้ม */
.landing-ranking-card {
  position: relative;
  z-index: 1;
  padding: 1.5rem;
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.landing-ranking-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  margin-bottom: 1.1rem;
}

.landing-ranking-card-head h3 {
  margin: 0;
  color: var(--text);
  font-size: .9rem;
  font-weight: 800;
}

.landing-legend {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .8rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.landing-legend-item {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  color: var(--text-soft);
  font-size: .7rem;
  font-weight: 600;
}

.landing-legend-dot { width: 8px; height: 8px; flex-shrink: 0; border-radius: 50%; }

.landing-leaderboard {
  display: grid;
  gap: .55rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.landing-rank-row {
  --medal-color: var(--primary);
  display: grid;
  grid-template-columns: 1.85rem minmax(0, 1fr) auto;
  align-items: center;
  gap: .4rem .85rem;
  padding: .7rem .9rem;
  background: color-mix(in srgb, var(--medal-color) 5%, var(--surface));
  border: 1px solid var(--border);
  border-left: 4px solid var(--medal-color);
  border-radius: var(--radius-md);
}

.landing-rank-row.is-top {
  border-color: color-mix(in srgb, var(--medal-color) 35%, var(--border));
  border-left-width: 5px;
  box-shadow: var(--shadow-xs);
}

.landing-rank-num {
  display: inline-flex;
  width: 1.85rem;
  height: 1.85rem;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--medal-color);
  border-radius: 50%;
  font-size: .75rem;
  font-weight: 800;
}

.landing-rank-main { grid-column: 2 / 3; min-width: 0; }

.landing-rank-name-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem;
  margin-bottom: .35rem;
}

.landing-rank-name { color: var(--text); font-size: .85rem; font-weight: 700; }

.landing-rank-count {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  color: var(--muted);
  font-size: .7rem;
}

.landing-rank-track {
  height: 7px;
  overflow: hidden;
  background: var(--surface-muted);
  border-radius: 9999px;
}

.landing-rank-fill { display: block; height: 100%; background: var(--medal-color); border-radius: inherit; }

.landing-rank-rate {
  grid-column: 3 / 4;
  color: var(--medal-color);
  font-size: .9rem;
  font-weight: 800;
  white-space: nowrap;
}

.landing-tile-footlink {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: 1rem;
  color: var(--primary);
  font-size: .75rem;
  font-weight: 700;
}

.landing-tile-footlink:hover { color: var(--primary-hover); text-decoration: underline; }

@media (max-width: 400px) {
  .landing-rank-row { grid-template-columns: 1.6rem minmax(0, 1fr); }
  .landing-rank-rate { grid-column: 2 / 3; justify-self: start; }
}

/* ===== กราฟแนวโน้ม ===== */

.landing-chart-panel {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}

.landing-chart-panel h3 {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin: 0;
  color: var(--text-soft);
  font-size: .9rem;
  font-weight: 700;
}

.landing-chart-panel h3 i { color: var(--primary); }

/* ===== Heatmap อัตราผ่าน คณะ x ปีการศึกษา ===== */

.landing-heatmap-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.5rem;
}

.landing-heatmap-scale {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: 0 0 auto;
  color: var(--muted);
  font-size: .7rem;
}

.landing-heatmap-scale i { width: 16px; height: 16px; border-radius: var(--radius-sm); }

.landing-heatmap-scale .level-1, .landing-heatmap-table .level-1 { background: color-mix(in srgb, var(--success) 16%, var(--surface)); }
.landing-heatmap-scale .level-2, .landing-heatmap-table .level-2 { background: color-mix(in srgb, var(--success) 32%, var(--surface)); }
.landing-heatmap-scale .level-3, .landing-heatmap-table .level-3 { background: color-mix(in srgb, var(--success) 50%, var(--surface)); }
.landing-heatmap-scale .level-4, .landing-heatmap-table .level-4 { background: color-mix(in srgb, var(--success) 70%, var(--surface)); }
.landing-heatmap-scale .level-5, .landing-heatmap-table .level-5 { background: var(--success); }

.landing-heatmap-scroll {
  width: 100%;
  min-width: 0;
  margin-top: 1.25rem;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

.landing-heatmap-table {
  width: 100%;
  min-width: 560px;
  border-collapse: separate;
  border-spacing: 6px;
}

.landing-heatmap-table th {
  padding: .5rem .65rem;
  color: var(--muted);
  font-size: .7rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  white-space: nowrap;
}

.landing-heatmap-table th[scope="row"] {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--surface);
  text-align: left;
}

.landing-heatmap-table td {
  min-width: 6.5rem;
  padding: .7rem .6rem;
  color: var(--text-soft);
  border-radius: var(--radius-sm);
  text-align: center;
}

.landing-heatmap-table td.level-0 { color: var(--muted); background: var(--surface-muted); }
.landing-heatmap-table td.level-4, .landing-heatmap-table td.level-5 { color: #fff; }

.landing-heatmap-table td strong,
.landing-heatmap-table td small,
.landing-heatmap-table td span { display: block; }

.landing-heatmap-table td strong { font-size: .8125rem; font-weight: 800; }

.landing-heatmap-table td small {
  margin-top: .2rem;
  color: inherit;
  font-size: .65rem;
  line-height: 1.4;
  opacity: .82;
}

@media (max-width: 640px) {
  .landing-heatmap-scale { flex-wrap: wrap; }
}

/* ===== ปิดท้าย ===== */

.landing-closing-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.75rem 2rem;
  background: var(--primary-soft);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, var(--border));
  border-radius: var(--radius-lg);
}

.landing-closing-card h2 {
  margin: 0;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -.01em;
}

.landing-closing-card p {
  max-width: 50ch;
  margin: .35rem 0 0;
  color: var(--text-soft);
  font-size: .8125rem;
  line-height: 1.6;
}

/* ===== Footer หลายคอลัมน์ ===== */

.landing-footer {
  color: color-mix(in srgb, #fff 78%, transparent);
  background: var(--brand-950);
}

.landing-footer-inner {
  max-width: 78rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .landing-footer-inner { padding: 3rem 2.5rem 2rem; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 3rem; }
}

.landing-footer-brand { display: flex; align-items: flex-start; gap: .75rem; }
.landing-footer-brand img { width: 40px; height: 40px; flex-shrink: 0; object-fit: contain; }
.landing-footer-brand strong { display: block; color: #fff; font-size: .9375rem; font-weight: 800; }
.landing-footer-brand p { max-width: 40ch; margin: .5rem 0 0; font-size: .8125rem; line-height: 1.7; }

.landing-footer-links h4 {
  margin: 0 0 .9rem;
  color: #fff;
  font-size: .8125rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.landing-footer-links ul { display: grid; gap: .6rem; padding: 0; margin: 0; list-style: none; }
.landing-footer-links a { color: inherit; font-size: .8125rem; transition: color .14s ease; }
.landing-footer-links a:hover { color: #fff; }

.landing-footer-bottom {
  padding: 1.25rem 1.25rem 1.75rem;
  border-top: 1px solid color-mix(in srgb, #fff 12%, transparent);
  text-align: center;
}

@media (min-width: 768px) {
  .landing-footer-bottom { padding-left: 2.5rem; padding-right: 2.5rem; }
}

.landing-footer-bottom p { margin: .2rem 0; font-size: .75rem; line-height: 1.7; }

/* ===== ปุ่มกลับขึ้นด้านบนสุด — โผล่หลังเลื่อนหน้าเกิน SHOW_AFTER (ดู JS ท้ายไฟล์) ===== */

.landing-back-to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  color: #fff;
  background: var(--primary);
  border: 0;
  border-radius: 9999px;
  box-shadow: var(--shadow-lg);
  font-size: 1.05rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .2s ease, transform .2s ease, background-color .16s ease, visibility .2s;
  cursor: pointer;
}

.landing-back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.landing-back-to-top:hover { background: var(--primary-hover); }
.landing-back-to-top:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

@media (min-width: 768px) {
  .landing-back-to-top { right: 2rem; bottom: 2rem; width: 50px; height: 50px; font-size: 1.15rem; }
}

@media (prefers-reduced-motion: reduce) {
  .landing-cta-primary, .landing-cta-secondary, .landing-navbar-cta { transition: none; }
  .landing-back-to-top { transition: opacity .01ms, visibility .01ms; }
}